Autothermal reformer-reforming exchanger arrangement for hydrogen production

a technology of hydrogen exchanger and reformer, which is applied in the direction of gaseous mixture working up, electrochemical generator, energy input, etc., can solve the problems of plot area requirements, capital costs, operating difficulties, etc., and achieves reduced energy requirements, reduced capital costs, and greater ease of operation

Active Publication Date: 2007-05-22
KELLOGG BROWN & ROOT LLC
View PDF7 Cites 45 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]The present invention uses a reforming exchanger in parallel with an autothermal reactor (ATR) in a new hydrogen plant with reduced capital costs, reduced energy requirements, greater ease of operation, and reduced NOx and

Problems solved by technology

Disadvantages of commercial ATR processes are the capital costs, operating difficulties, and plot area requirements associated with t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Autothermal reformer-reforming exchanger arrangement for hydrogen production
  • Autothermal reformer-reforming exchanger arrangement for hydrogen production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011]One embodiment of a process according to the present invention has the general configuration shown in FIGURE. Desulfurized natural gas or other hydrocarbon supplied from line 2 is mixed with process steam from line 4 and the mixture is preheated in a feed preheat exchanger 6. The steam to carbon ratio of the mixture is desirably from 2.0 to 4.0, e.g. about 3. A first portion of the preheated steam-hydrocarbon mixture is fed via line 8 to the burner in autothermal reformer (ATR) 10, and a second portion is supplied via line 12 to the tube-side inlet of reforming exchanger 14. If desired, additional steam can be added via line 36 to line 8.

[0012]Air is supplied via line 16 and mixed with steam from line 18, and the steam-air mixture is preheated in preheater 38, e.g. to a temperature from 200° C. to 650° C., and sent to the burner via line 20, taking due care to maintain the flame temperature in the burner below 1500° C. The air is desirably excess air, by which is meant that th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Low-energy, low-capital hydrogen production is disclosed. A reforming exchanger 14 is placed in parallel with an autothermal reformer (ATR) 10 to which are supplied a preheated steam-hydrocarbon mixture. An air-steam mixture is supplied to the burner/mixer of the ATR 10 to obtain a syngas effluent at 650°-1050° C. The effluent from the ATR is used to heat the reforming exchanger, and combined reformer effluent is shift converted and separated into a mixed gas stream and a hydrogen-rich product stream. High capital cost equipment such as steam-methane reformer and air separation plant are not required.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of our earlier provisional application U.S. Ser. No. 60 / 320,015, filed Mar. 18, 2003.BACKGROUND OF INVENTION[0002]This invention relates to the production of a synthesis gas (syngas) using an autothermal reactor (ATR) and a reforming exchanger.[0003]Reforming of hydrocarbons is a standard process applying a plurality of generally endothermic reactions for the production of hydrogen-containing synthesis gas used for manufacturing ammonia or methanol, for example. A conventional autothermal reforming reactor (ATR) is a form of steam reformer including a catalytic gas generator bed with a specially designed burner / mixer to which preheated hydrocarbon gas, air or oxygen, and steam are supplied. Partial combustion of the hydrocarbon in the burner supplies heat necessary for the reforming reactions that occur in the catalyst bed below the burner to form a mixture of mostly steam, hydrogen, carbon monoxide (CO...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B3/24C01B3/26C10G70/02H01M8/04C01B32/50B01J8/04B01J8/06C01B3/38C01B3/48
CPCB01J8/0488B01J8/065B01J8/067C01B3/382C01B3/384C01B3/48H01M8/0618H01M8/0668B01J8/0496Y02E60/50B01J2208/00309B01J2208/00504B01J2208/0053B01J2219/00006C01B2203/0233C01B2203/0244C01B2203/0283C01B2203/0405C01B2203/042C01B2203/0844C01B2203/141C01B2203/142C01B2203/82Y02P20/129
Inventor MALHOTRA, AVINASHGOSNELL, JAMES HANLAN
Owner KELLOGG BROWN & ROOT LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap